The Castelli Climber's 4.0 jersey was created for warmer days when aerodynamics still matter. This jersey allows ample airflow, dries quickly and blocks over 90% of UV rays on the back. A great choice for long summer rides or hot lunchtime rides in the middle of summer, or simply add a base layer and it makes a great three-season jersey.

• CFD-based fabric placement and seam construction.
• Rapid cooling, lightweight and aerodynamic efficiency designed.
• Airflow shoulder construction.
• 3D Flow fabric on the front.
• StradaPro 3D back for breathability.
• Elasticized sleeves at elbow with raw cut edge.
• Elastic around the waist to keep the jersey in place and support pockets.
• YKK Vislon zipper.
• Contains bluesign certified fabrics.
• Temperature range: min 22C/max 40C.
• Weight: 118 gr.
• Color: Yellow (SULPHUR).

*** CAUTION: Tight fit. One size larger is recommended. ***